LS950-4K - Video projector VIEWSONIC - Free user manual and instructions

Product Type	Video Projector
Brand	Viewsonic
Model	LS950-4K
Resolution	3840 x 2160 (4K UHD)
Light Source	Laser Phosphor
Brightness	5,000 ANSI Lumens
Contrast Ratio	3,000,000:1 (Dynamic)
Lamp Life	Up to 20,000 hours (Normal Mode)
Projection System	DLP (Digital Light Processing)
Throw Ratio	0.233 (Ultra Short Throw)
Image Size	80" – 120" (diagonal)
Inputs	2x HDMI 2.0, 1x USB-A, 1x USB-C, 1x RJ45, 1x RS232
Outputs	1x Audio 3.5mm, 1x S/PDIF
Built-in Speaker	2 x 10W Stereo
Dimensions (W x D x H)	508 x 400 x 165 mm
Weight	11.5 kg
Power Consumption	400W (Normal Mode), <0.5W (Standby)
Power Supply	AC 100-240V, 50/60Hz
Noise Level	32 dB (Normal Mode), 28 dB (Eco Mode)
Keystone Correction	Vertical ±30°, Horizontal ±30°
Supported HDR	HDR10, HLG
3D Compatibility	Yes (DLP Link)
Cleaning	Use a soft, dry cloth; avoid solvents. Clean air vents regularly.
Safety	Do not look directly at the laser beam. Keep away from children.
Spare Parts / Repairability	Laser module replaceable by authorized service. Contact Viewsonic support.

Frequently Asked Questions - LS950-4K VIEWSONIC

How do I connect my laptop to the LS950-4K projector?

Use an HDMI cable to connect your laptop's HDMI output to one of the projector's HDMI ports. If your laptop has USB-C with display output, you can use the USB-C port. Select the corresponding input source via the remote or menu.

What is the recommended screen size for this projector?

The LS950-4K is an ultra-short throw projector designed for screen sizes from 80 to 120 inches diagonal. For best results, place the projector at the specified distance (about 18.5 cm from the screen for a 100-inch image).

How do I clean the projector lens?

Turn off the projector and wait for it to cool. Use a soft, lint-free cloth or a lens cleaning pen. Do not use liquids or abrasive materials. Gently wipe the lens in a circular motion.

The projector shows a 'Laser error' message. What should I do?

This may indicate an overheating issue or laser module failure. Turn off the projector, unplug it, and wait 10 minutes. Check if air vents are blocked. If the error persists, contact Viewsonic support.

Can I use the projector for gaming?

Yes. The LS950-4K supports up to 60Hz refresh rate at 4K. For lower latency, enable 'Game' mode in the picture settings. The input lag is approximately 50ms in 4K.

How do I adjust the focus?

The LS950-4K features an autofocus system. Alternatively, you can manually adjust focus via the remote control or on-screen menu. Navigate to 'Setup' > 'Focus' and use the arrow keys.

Does the projector have built-in Wi-Fi?

No, the LS950-4K does not have built-in Wi-Fi. Use an external streaming device (e.g., Chromecast, Fire Stick) connected to one of the HDMI ports for wireless streaming.

What is the lifespan of the laser light source?

The laser light source is rated for up to 20,000 hours in Normal mode and up to 30,000 hours in Eco mode. This equates to many years of typical use.

How do I update the firmware?

Download the latest firmware from the Viewsonic support website. Save it to a USB drive (FAT32). Insert the USB drive into the projector, go to Menu > Setup > Firmware Update, and follow the on-screen instructions.

The remote control is not working. What can I do?

First, check that the batteries are installed correctly and have charge. Point the remote directly at the IR sensor on the projector. If issues persist, try using the projector's physical buttons. Replace batteries if needed.

USER MANUAL LS950-4K VIEWSONIC

Mounting Screw: M4 x 8 (Max. L = 8 mm) Unit: mm

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1st Screen	Sub	2nd Projection distance				3rd Image Invert		4th Vertical mica-ram
		Invert	Invert	Invert	Invert	Invert	Invert
Pcb	mm	Inb	mm	Inb	mm	Inb	mm	Inb
B0	1750	13.70	1324	26.35	2193	24.72	273	13.68
B0	1324	24.89	1645	24.00	2642	27.42	247	16.16
B0	1750	76.02	1931	23.69	3091	34.32	372	12.88
B0	2032	37.28	2224	29.36	3540	39.22	396	2.37
B0	2396	36.14	2488	37.04	3985	44.32	3125	24.22
B0	2540	20.90	2761	24.72	4533	42.62	3245	26.05
B0	3048	21.62	3348	22.08	5338	35.62	2404	32.25
B0	3810	16.50	4193	26.11	6683	73.34	1868	40.45
B0	4070	18.91	5045	31.67	8105	84.35	2347	40.24
B0	5030	21.10	5610	35.19	9928	95.65	2495	53.91
B0	6350	26.90	7031	41.09	11170	122.57	3113	67.45
B0	7620	22.70	8450	52.28	12418	147.28	3735	90.93

It's recommended that if you intend to permanently install the projector, please physically test the projection site and distance using the actual projector in situ before you permanently install it.

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